Prices reach equilibrium at the level at which quantity demanded ______ quantity supplied.
| A．is equal to | B．equal | C．equals to | D．is equal |
— I’ve told Nancy many times about the meeting, but she still forgot it!
— I understand. Actually, anyone ______ be very forgetful at times.
| A．must | B．should | C．ought to | D．can |
The small window in the wall could ______ some light into the room.
| A．admit | B．hold | C．host | D．replace |
Some exercises appear to be ______ ones you have done, but on ______ second thoughts, you’ll find that they’re different.
| A．/; the | B．the; / | C．the; a | D．/; / |
—Thank you for having bought me a ticket for the World Expo in Shanghai!
—________.
| A．Come on | B．All right | C．No problem | D．With pleasure |
_______ what would happen, none of them could find a way out.
| A．Left wondering | B．Having left wondering |
| C．Leaving to wonder | D．Having left to wonder |